Datasheet

Appendix B Internal I/O Registers
Rev.6.00 Sep. 27, 2007 Page 1129 of 1268
REJ09B0220-0600
IER—IRQ Enable Register H'FF2E Interrupt Controller
7
IRQ7E
0
R/W
6
IRQ6E
0
R/W
5
IRQ5E
0
R/W
4
IRQ4E
0
R/W
3
IRQ3E
0
R/W
0
IRQ0E
0
R/W
2
IRQ2E
0
R/W
1
IRQ1E
0
R/W
IRQn Enable
0
1
IRQn interrupt disabled
IRQn interrupt enabled
(n = 7 to 0)
Bit
Initial value
Read/Write
:
:
:
ISR—IRQ Status Register H'FF2F Interrupt Controller
7
IRQ7F
0
R/(W)*
6
IRQ6F
0
R/(W)*
5
IRQ5F
0
R/(W)*
4
IRQ4F
0
R/(W)*
3
IRQ3F
0
R/(W)*
0
IRQ0F
0
R/(W)*
2
IRQ2F
0
R/(W)*
1
IRQ1F
0
R/(W)*
Bit
Initial value
Read/Write
Note: * Can only be written with 0 for flag clearing.
:
:
:
Indicate the status of IRQ7 to IRQ0 interrupt requests